Table 2. Disease - specific characteristics and medications.

	HFrEF (n =23)
Disease-specific characteristics
Left ventricular ejection fraction, % (mean ±SEM)	22 ± 12
Diagnosis (ischemic)	14 / 23
Diagnosis (non-ischemic)	9 / 23
NYHA class II	16 / 23
NYHA class III	7 / 23
Diabetic	4 / 23
Medications
β-Blocker	23 / 23
ACE inhibitor	17 / 23
Angiotensin receptor inhibitor	4 / 23
Statin	18 / 23
Diuretic	18 / 23
Aldosterone inhibitor	4 / 23
Calcium channel inhibitor	1 / 23
Digoxin	4 / 23
Anticoagulant	13 / 23
Antiarrhythmic	1 / 23
Erythropoiesis - stimulating agent	1 / 23

HFrEF, heart failure with reduced ejection fraction; NYHA, New York Heart Association; ACE, angiotensin-converting enzyme.